These "total monsters of fishes" are extinct today, though new clues about their lives come from CT scans and their closest ...

(Reuters) - Scientists in Australia have unearthed beautifully preserved fossilized hearts and other internal organs of ancient armored fish in a discovery that provides insight into the evolution of ...

A tiny fossil fish from Alberta is forcing scientists to rethink a story that has sat quietly in textbooks for decades. It is ...

During these waves of mass extinction, most vertebrate survivors were confined to refugia, or isolated biodiversity hotspots ...

Museum fossils in England reveal 200-million-year-old coelacanths, fish that swam alongside the first dinosaurs ...

A big catch of fish fossils in southern China includes the oldest teeth ever found, researchers say. The findings may help scientists learn how our aquatic ancestors got their bite. The finds offer ...

Fossilized fish found in Australia are so well preserved that paleontologists can see what the creatures ate for their last ...

The first known cases of accidental choking have been discovered, dating back 150 million years, when some opportunistic fish got more than they bargained for picking off algae and slime from dead ...

Paleontologists unearthed fish teeth that are 14 million years older than any other teeth found from any species – and the discovery could rewrite our understanding of early evolution. Four studies ...